$(function() {	
	var totalPanels			= $(".scrollContainer").children().size();
	
	var regWidth			= $(".panel").css("width");
	var regImgWidth			= $(".panel img").css("width");
	var regTitleSize		= $(".panel h2").css("font-size");
	var regParSize			= $(".panel p").css("font-size");
	
	var movingDistance	    = 400;
	
	var curWidth			= 472;
	var curImgWidth			= 460;
	var curTitleSize		= "20px";
	var curParSize			= "15px";

	var $panels				= $('#slider .scrollContainer > div');
	var $container			= $('#slider .scrollContainer');

	$panels.css({'float' : 'left','position' : 'relative'});
    
	$("#slider").data("currentlyMoving", false);

	$container
		.css('width', ($panels[0].offsetWidth * $panels.length) + 100 )
		.css('left', "-600px");

	var scroll = $('#slider .scroll').css('overflow', 'hidden');

	function returnToNormal(element) {
		$(element)
			.animate({ width: regWidth })
			.find("img")
			.animate({ width: regImgWidth })
		    .end()
			.find("h2")
			.animate({ fontSize: regTitleSize })
			.end()
			.find("p")
			.animate({ fontSize: regParSize });
	};
	
	function growBigger(element) {
		$(element)
			.animate({ width: curWidth })
			.find("img")
			.animate({ width: curImgWidth })
		    .end()
			.find("h2")
			.animate({ fontSize: curTitleSize })
			.end()
			.find("p")
			.animate({ fontSize: curParSize });
	}
	
	//direction true = right, false = left
	function change(direction) {
	   
	    //if not at the first or last panel
		if(direction && (!(curPanel < totalPanels)) || (!direction && (curPanel <= 1))) {  return false; }	
        
        //if not currently moving
        if (($("#slider").data("currentlyMoving") == false)) {
            
			$("#slider").data("currentlyMoving", true);
			
			var next         = direction ? parseInt(curPanel) + 1 : curPanel - 1;
			var leftValue    = $(".scrollContainer").css("left");
			var movement	 = direction ? parseFloat(leftValue, 10) - movingDistance : parseFloat(leftValue, 10) + movingDistance;
		
			$(".scrollContainer")
				.stop()
				.animate({
					"left": movement
				}, function() {
					$("#slider").data("currentlyMoving", false);
				});
			
			returnToNormal("#panel_"+curPanel);
			growBigger("#panel_" + next);
						
			curPanel = next;
			
			//remove all previous bound functions
			$("#panel_"+(parseInt(curPanel) + 1)).unbind();	
			
			//go forward
			$("#panel_"+(parseInt(curPanel) + 1)).click(function(){ change(true); });
			
            //remove all previous bound functions															
			$("#panel_"+(curPanel - 1)).unbind();
			
			//go back
			$("#panel_"+(curPanel - 1)).click(function(){ change(false); }); 
			
			//remove all previous bound functions
			$("#panel_"+curPanel).unbind();
			
			return curPanel;
		}
	}
	
	// Set up "Current" panel and next and prev
	growBigger("#panel_2");	
	var curPanel = 2;
	
	$("#panel_"+(parseInt(curPanel) + 1)  +", .right").click(function(){ change(true); });
	$("#panel_"+(curPanel - 1)  +", .left").click(function()  {  change(false); });
});